21668689

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1\times {\mathrm{373}}^1$

素因数の和:616

約数の個数: 16

約数和(自身を含む): 25539712

約数和(自身を除く): 3871023

約数列:

[1, 7, 43, 193, 301, 373, 1351, 2611, 8299, 16039, 58093, 71989, 112273, 503923, 3095527, 21668689]

約数ペア:

[(1, 21668689), (7, 3095527), (43, 503923), (193, 112273), (301, 71989), (373, 58093), (1351, 16039), (2611, 8299)]